Block-molding machine.



PATENTED JAN. 15,- 1907.

APPLICATION FILED SEPT. 7.1906.

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' P. CHRISTIAN & E. 3. REED. I BLOCK MOLDING MACHINE.

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FREDERICK CHRISTIAN AND ELMO H. REED, OF WIOHITA, KANSAS, AS-

. SIGNORS OF ONE-THIRD TO GEORGE O. CHRISTOPHER, OF WIOHITA,

KANSAS.

BLOCK-MOLDING MACHINE.

Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed September '7, 1906. Serial No. 333.648.

To aIZZ whom it may concern:

Be it known that we, FREDERICK OHRIs- TIAN and ELMO H. REED, citizens of the United States, residing at Wichita, in the county of Sedgwick, State of Kansas, have invented certain new and useful Improvements in Block-Molding Machines, of which the following is a specification, reference being had therein to the accompanying draw in s.

Ihis invention relates to a block-molding machine, and particularly to a mold provided with a removable core and mounted to tilt for the delivery of the block therefrom.

The invention has for an object to improve the construction and arrangement of the walls for the mold-box, the supports therefor by which they may be adjusted in position, the construction of the core, and the means for operating these several parts so as to secure the most efiicient and desirable action of the mold, while permitting the adjustment thereof for blocks of different sizes and preventing the adhesion of the block to the mold as it is removed therefrom.

Otherand further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings, Figure 1 is an end elevation of the invention. Fig. 2 is a front view of the mold-box support. Fig. 3 is a plan thereof. Fig. 4 is a detail elevation of the rear wall of the mold-box. Fig. 5 is a vertical section therethrough at one of the cores. Fig. 6 is an enlarged cross-section through the core. Fig. 7 is a detail perspective of one of the end walls. Fig. 8 is a similar view of the bottom-support. Fig. 9 is a detail perspective of the bottom, and Fig. 10 is a vertical longitudinal section through a modified form of the mold-box.

Like numerals of reference indicate like parts in the several views of the drawings.

The numeral 1 designates the base of the machine, which may be of any desired character or configuration and has secured thereto the rear wall 2 of the mold bymeans of the bolts 3 or other suitable devices. This rear Wall, as shown in Fig. 4, is formed with the apertures 4, adapted to receive the cores 5, and with the slots 6, by which the end walls 7 are secured in position upon the rear wall 2 and may be adjusted thereon as found necessary or desirable in forming blocks of different sizes or lengths. These end walls 7 are similar in construction, each being provided with an attaching-plate 8 at one end provided with vertical slots 9 therethrough, adapted to receive the securing-bolts 10, asshown in Fig. 1, while extending at an angle to the plate 8 is a top plate 11, which strengthens the former and protects the other parts from contact with the concrete. The end wall is provided with the open or cut-away portion 12, adapted to be normally covered by means of the plate 13, which comes directly into contact with the material to be molded and is pivotally mounted by means of the pivot 14, extending into bearing 15, carried by the wall 7. The plate 13 is normally held in position by the spring 16, which is attached thereto at 17 and to the end wall at 18, as shown in Fig. 7

The front wall of the mold is composed of the removable pallet or board 19, which is supported in position upon the frame 20 and adapted to contact with the posts or standards 21, rising therefrom. The bottom 22 of the mold is also supported by this frame by means of the lugs 23, depending therefrom, which are adapted to loosely receive the pins 24, extending laterally from the frame, so as to permit a slight oscillation or tilting of the bottom on the frame, as found desirable when releasing the block from the mold, in

order to prevent sticking to the bottom 22.

This tilting may be accomplished in any de sired manner, preferably by means of the levers 25, which are pivotally mounted upon the standards 21 at 26 and are provided at their lower ends with the cam-faces 27, adapted to engage the lugs 28, carried at the outer edge of the bottom 22. It will be-seen that the operation of these levers will cause a slight tilting or rocking of the bottom, so as to release it from contact with the molded material.

For the purpose of swinging the bottom and other parts of the mold-box outward in the delivery of the completed block the frame 20 is pivotally mounted by means of lugs 29 on its under face, adapted to receive the pintles 30 at the opposite ends of the supporting-bar 31, which bar is pivotally mounted at 32 to be adjusted or tilted in a vertical plane and adapted to be secured at such adfrom the post 34 and into the bar.

in Fig. 10 the wall of the mold-box is justment by means of the nuts 33, extending (See Fig. 2.) This post may be provided with a slot 35,adapted to receive the bolt or pin '36, carried by the fixed part 37, so as to guide the vertical movement thereof- This vertical movement or adjustment of the parts of the mold-box is adapted to be secured by means of a screw 38, having a swiveled bearing 39 in an angular extension 40 from the post 34 and threaded in a lug 41, extending from the fixed part 36. V v

The mold-box so far described is adapted for use Without a core or cores, and when it is desiredto use the same the rear wall 3 of the mold is provided with the core-plate 42, having an opening of proper size and configuration to receive'the core 43. This plate is removably supported in the rear wall by means of the turn-buttons 44 or other suitable devices and can be quickly removed and the core used with adii'ferent core-plate. The core itself is adapted to be adjusted for different conditions of work and consists of the top member 45 and the bottom member 46, "adapted to telescope within each other and to be adjustably secured together by means'o'f the countersunk bolt 47 as shown in Fig. 6. I The end wall'48 of the-core is provided with slots 49, adapted to receive the securingb'olts 50, which also pass through vertical slots 51, formed in the face 52 of the 7 carrier 53 for the cores. This arrangement permits aprop'er adjustment of the corepl'ates, while the free end of the core is tapered or sharpened, as shown at 54, so as to quickly'cut its way through the concrete or "other material until it reaches the pallet or board 1'9, as shown-in Fig. 5.

The core is slidingly mounted by'means of the bearings 55, disposed upon the supportin'g-rod 56, whichextencls laterally fromthe machine, and the core isoperated by means of the lever 57, (see Fig. 5,) pivot'ally connected by the'link -58 to the core and having its pivot 59 mounted in a suitable bearing 60, carried by the frame of the machine. This shaft or bearing is provided with the hand-lever 6 1' for the purpose of operating the same.

p In moldsof this character it is frequently difficult to start the core, which adheres to the material used, and for that purpose a starting device is provided comprising a bellcrank lever 62, pivotally mounted on the rear wall of the mold-box at 63 and having its toe disposed at the rear of the plate'52 so as to contact therewith. From this bellcrank'lever a rod64 extends to the foot-lever 65,where it is pivotally connected at 66, said foot-lever being pivoted at 67 upon the extension 68 from the lever 57.

In the application of the invention shown adapted to .be supported at an angle to a horizontal plane for the purpose of forming blocks having a triangular or tapering form, and the end walls 71 are adapted to be each relatively adjusted by means of the slots 72 in the back walls and the securing-nuts 73, while the bottom plate 74 is adapted to be tilted to the proper angle by means of the adjustment of the bar 31, as hereinbefore described.

' In the operation of the invention it will be seen that the mold-box is disposed with the walls in the position shown in Fig. 5, ad- 'justed for the proper size of block to be formed, when the lower portion of the mold will be filled and properly tamped, after which the core is inserted into position and the material tamped around the same. The

ortion of the mold above the core is then lled and properly leveled. When the material is set to the "desired extent, the" core "is started by means of the foot-lever and fun ther completely removed by'the hand-lever, when the front and bottom wallsofthemold "are tilted to one side, so that the block may be removed to any desired point for curing. It will be obvious from the construction and arrangement of these several parts that the walls may be adjusted to mold blocksof different sizes and configurationforinstance, tapering or triangular, asshownin Fig. 1 0 while the construction "of the back walls with the insertible core-plates permits the use of cores of different sizes and designs whenever found desirable, and the construction of the core itself of separable members adjustably secured together permits a singlecore tobe adjusted for a very wide variety of sizes. It is also found 'desirabl-eto form the cores with a tapering or cutting edge at the front for the purpose of cutting through the material in its path as the cores are inserted until they reach the pallet or board, while any material that is collected will be'r'eceivedintoth'e hollow core. The starting device for this co'r'e also constitutes a material improvement in this art, as it is adapted to-be operatedby the foot'lever, asin the event of the 'coresticki'n'g a material force is required' to break-the contact with theconcrete mixture. The con 'stru-c'ti'on of the frame mounted for vertical adjustment and supporting thebotto'm and front walls of the mold-box permits a very convenient adjustment of the parts relative to the fixed back and end walls thereof, while the tiltablesupport 'for the frame permits these front and bottom walls'to'be-disposed in an inclined position when it is desired to form. a block of greater diameter at one end than the other. The levers mounted upon the standardsfor'the front Waller pallet provide means I by which the bottom maybe held in position and slightly tilted or rocked when'it is desired to break contact with the molded block. The construction of the end plates for the mold also comprises a material improvement in this art, as it prevents the stripping or injury of the end of the block and acts to trowel the same by providing a smooth plate pivotally mounted upon the end wall so that it will turn partially outward as the mold is tilted to release the com pleted block, and thus have a sliding move,- ment across the end of the block, which prevents the latter from bulging incident to the ends which swing away from the ends of the block in the ordinary construction of such machines. This troweling plate or wall returns to its normal position by means of the springs connected therewith. The construction of machine thus described permits the formation of a block of a much more desir able character in that the concrete may be made with a much larger proportion of water at the time of making the block, thus securing a more homogeneous block with a greater resistance to the crushing load than when it is necessary to use a drier mixture.

The construction and application of a pallet or board as the front wall of the mold permit the use of a large board and obviate the necessity of recessing the same, so as to receive the core, and the construction is such that a pallet of maximum size for the capacity of the mold may be used with any other size of block formed therein, thus greatly reducing the number of boards necessary in the operation of an ordinary machine, as this board is supported entirely independent of the remaining walls of the mold.

Having now described our invention and set forth its merits, what we claim and desire to secure by Letters Patent, is

1. In a block-molding machine, a frame, a rear wall rigidly supported therefrom, end walls rigidly mounted upon said rear wall, and a tiltingly-mounted bottom and front wall adapted for joint movement independent of the end walls.

2. In a block-molding machine, a frame, a rear wall rigidly supported therefrom, end walls rigidly mounted upon said rear wall, and a tiltingly-mounted bottom provided with means to support a removable pallet as a front wall and jointly movable with the bottom independently of the end walls.

3. In a block-molding machine, a frame, a rear wall rigidly supported therefrom, end walls mounted upon said rear wall, a tiltinglymounted bottom and front wall, and a relatively movable plate mounted upon the inner face of the end walls.

4. In a block-molding machine, a moldboX provided with a tiltingly-mounted bottom and side wall, a core, a carriage for reciprocating said core toward and from said side wall, means for shifting said core, and

an independent starting device connected to said core.

5. In a block-molding machine, a mold.-

box provided with a tiltingly-mounted bottom and side wall, a core, a carriage for reciprocating said core toward and from said side wall, means for shifting said core, a starting device comprising a crank-lever connected to said core, and an operating-lever connected to said crank-lever.

6. In a block-molding machine, a moldbox provided with a tiltingly-mounted bottom and side wall, a core, a carriage for reciprocating said core toward and from said side wall, means for shifting said core, a starting device comprising a crank-lever connected to said core, and a pivoted treadle having a rod connection with said crank-lever.

7. In a block-molding machine, a core composed of opposite members adjustably secured together one of said members having a transverse attaching-wall at one end thereof.

8. I11 a block1nolding machine, a fixed rear wall, end walls secured thereto, a supporting-frame mounted for vertical adjustment, and a bottom and front wall pivotally carried by said frame for movement transversely of the mold.

9. In a block-molding machine, a fixed rear wall, end walls secured thereto, a supporting-frame mounted for vertical adjustment, a bottom and front wall carried by said frame, means for tiltingly adjustingsaid frame longitudinally of said mold.

10. In a block-molding machine, a wall provided with an aperture therein, and a movable core-plate mounted in said wall and provided with an aperture to correspond with the core used.

11. In a block-molding machlne, a supportlng frame provided with projections therefrom, a bottom plate disposed upon said frame to tilt upon said projection, standards extending upward from said frame, and levers pivoted in said standards to tilt said bottom.

12. In a block-molding machine, a supporting frame provided with projections therefrom, a bottom plate disposed upon said frame to tilt upon said projection, standards extending upward from said frame, levers pivoted to said standards to tilt said bottom, projecting lugs carried by the bottom, and a cam-face upon said levers to engage said lugs.

13. In a block-molding machine, an end wall provided with a securing-flange, a troweling-plate pivotally mounted upon said wall to swing relatively thereto, and a restoringspring extending from said plate to a portion of the end wall.

14. In a block-molding machine, a sup-v porting-frame for a tilting wall provided with bearings in its under face, a bar pivoted at its opposite ends in said bearings, a central post upon which said bar is pivotally mounted, and means for securing said bar at its pivoted adjustment upon said post.

15. In a block-molding machine, a supeling plate carried by the inner face of the end walls.

19. In a block-molding.machine,a-moldbox provided with a bottom and means for supporting a pallet-board as the front wall thereof,.a core mounted to traveltoward and from said board, a rigidly-mounted back wall, end walls said back wall, and meansforvertically adjusting said board and bottom independent of theremaining walls.

20. In a block-molding machine, a moldbox provided with a bottom and means for supporting a pallet-board as the front wall thereof, a core mounted totravel-toward and from said board, a rigidly-inounted back wall, end walls adjustably mounted upon saidback wall, .means for verticallyadjusting said board and bottom independent of the remaining walls, and means for tilting said bottom-longitudinally of the mold.

21 In a block-molding machine, an end wall, and'a trowel-plate mounted thereon for travel relative thereto in the discharge from the mold.

In testimony whereof we affix our signatures in presence of two witnesses.

rnnn ninex CHRISTIAN. ELMO n. REED.

porting-frame for a tilting wall provided with bearings in its under face, a'bar pivoted at its opposite ends in said bearings, a central post upon which said bar is pivotally mounted, means for securing said bar at its pivoted adjustment upon said post, and a feed-screw carried by said post and engaging a fixed member to adjust the post vertically.

16. Ina block-molding machine, a moldbox, a core mounted to slide therein, a shifting-le'ver for said core, an operating-handle for said lever, a starting device for'engaging, said core, a shifting-treadle for said starting device pivotally mounted upon the extended end of said .leveiyand a connecting-rod from said treadle to the starting device.

17. In a block-molding machine, a moldbox provided with a bottom and means for supporting a pallet-board as the front wall thereof, a core mounted totravel toward and fromsaid board, a rigidly-mounted back wall, end walls rigidly mounted upon said back wall for adjustment longitudinally thereof, and means for tilting said pallet and bottom within said end walls.

1 8. In a block-molding machine, a moldbox provided with means for supporting a pallet-board as the front wall thereof, a core mounted to travel toward and from said board, a rigidly-mounted back wall, end walls I adjustably mounted upon said back wall, Witnesses: means for tilting outwardly said board and L; F. HAYMAKER,

H. H. CARR.

the bottom of the mold, and a movable trow- 4 adjustably mounted upon 

